Sensitivity and specificity of chest x-ray screening for lung cancer

This is the authors' abstract. We don't add key points for this paper.

In the authors' opinion, the considerable improvements in distribution by disease stage, tumor resectability, and patient survival in the screened groups demonstrate the effectiveness of chest X-ray screening in the early detection of lung carcinoma. The authors conclude that radiographic screening is the only valid method of secondary prevention in cigarette smokers.